HxC Floppy Drive Emulator

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 Post subject: Cromemco format
PostPosted: Mon Apr 09, 2012 6:48 am 
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Joined: Wed Feb 29, 2012 6:17 am
Posts: 3
Hi,
I have been trying to get the HxC working on IMD images from a Cromemco system (C-10 in this case). I am thinking it might be due to the first track/side 0 being formatted in SD while the rest are formatted in DD. Is the HxC capable of interchanging density formats on a single disk image? I can image the (real) disks using IMD program of Dave Dunfield - but I have never been able to write a new disk from the resultant image because my computer can read SD but can't write them. Has anyone else had this issue and is there any solution? Thanks
Brett
PS. I have images if required.


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 Post subject: Re: Cromemco format
PostPosted: Mon Apr 16, 2012 11:32 am 
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Joined: Fri Oct 20, 2006 12:12 am
Posts: 2844
Location: Paris
bah wrote:
Hi,
I have been trying to get the HxC working on IMD images from a Cromemco system (C-10 in this case). I am thinking it might be due to the first track/side 0 being formatted in SD while the rest are formatted in DD. Is the HxC capable of interchanging density formats on a single disk image? I can image the (real) disks using IMD program of Dave Dunfield - but I have never been able to write a new disk from the resultant image because my computer can read SD but can't write them. Has anyone else had this issue and is there any solution? Thanks
Brett
PS. I have images if required.


Hi,

Please send me the IMD image, i will have a look.

About the SD/DD mix , i have a beta firmware supporting this.

Can you read the disk on with the HxC on the Cromemco ?


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 Post subject: Re: Cromemco format
PostPosted: Tue Apr 17, 2012 1:03 pm 
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Joined: Wed Feb 29, 2012 6:17 am
Posts: 3
Hi Jeff
Thanks for the response. I have an imd of the system disk (just redid it to make sure it was all ok). It seems to have read fine on the PC I use to image. I have not been able to write a disk from these images, as my floppy controller only supports reading FM and not writing (a common problem on Pentium and greater motherboards). I am hoping that the HxC will be able to become my standard "floppy" drive on the old beast of a Cromemco C-10. Cromemco used this strange mix of SD/DD (first cylinder/side 0 being SD). Once the system read the first sector of the SD cylinder it could determine what the rest of the disk was (whether SD or DD and the size (I assume 5.25 or 8'') - a few characters at the end of the sector held the details). It seems like a good idea, but no one ever supported this strange format. The HxC will hopefully breath a bit of life back into it.
Thanks for your time,
Brett


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 Post subject: Re: Cromemco format
PostPosted: Sun Apr 22, 2012 12:46 pm 
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Joined: Fri Oct 20, 2006 12:12 am
Posts: 2844
Location: Paris
bah wrote:
Hi Jeff
Thanks for the response. I have an imd of the system disk (just redid it to make sure it was all ok). It seems to have read fine on the PC I use to image. I have not been able to write a disk from these images, as my floppy controller only supports reading FM and not writing (a common problem on Pentium and greater motherboards). I am hoping that the HxC will be able to become my standard "floppy" drive on the old beast of a Cromemco C-10. Cromemco used this strange mix of SD/DD (first cylinder/side 0 being SD). Once the system read the first sector of the SD cylinder it could determine what the rest of the disk was (whether SD or DD and the size (I assume 5.25 or 8'') - a few characters at the end of the sector held the details). It seems like a good idea, but no one ever supported this strange format. The HxC will hopefully breath a bit of life back into it.
Thanks for your time,
Brett


But can you read this image on the Cromenco with the HxC (you should be able to read it...) ?


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 Post subject: Re: Cromemco format
PostPosted: Wed Jul 25, 2012 9:57 am 
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Joined: Wed Feb 29, 2012 6:17 am
Posts: 3
Hi,
I was able to get the HxC to work on the Cromemco C-10. The problem was the pins from the 5.25 connector of the C-10 to the 3.5inch connector on the HxC. Once that was sorted out it worked like a charm.
So if you like you can add it to the list of supported formats. As the strange SD track 0/DD rest of tracks was a standard Cromemco format it should also work for the System 3's etc.
Thanks your time.


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 Post subject: Re: Cromemco format
PostPosted: Fri Jul 27, 2012 11:19 pm 
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Joined: Fri Oct 20, 2006 12:12 am
Posts: 2844
Location: Paris
bah wrote:
Hi,
I was able to get the HxC to work on the Cromemco C-10. The problem was the pins from the 5.25 connector of the C-10 to the 3.5inch connector on the HxC. Once that was sorted out it worked like a charm.
So if you like you can add it to the list of supported formats. As the strange SD track 0/DD rest of tracks was a standard Cromemco format it should also work for the System 3's etc.
Thanks your time.


Ok thanks for the feedback.

Can you make some pictures of this computer ?


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